Knowledge Base

Preparing the Active Directory forest for an upgrade using Adprep.exe

Article Summary: This article provides steps to upgrade the Active Directory (AD) forest schema to Windows Server 2012 R2, version 69, using adprep.exe. Follow the steps in the solution to achieve this goal.

Solution:

Prepare the existing AD environment for the migration to the new version of the schema using adprep.exe. Log on to the server as domain Administrator, open elevated command prompt and perform the following steps.

a. Press the Windows Logo+R, type runas /user:administrator@domain.local where domain.local is replaced by the name of the Active Directory domain and press Enter.

Note: The drive letter d: in the above command is the DVD drive on the Dell PowerEdge 1950 and contains the Windows Server 2012 R2 DVD.

d. Type C to confirm the to upgrade the schema and press Enter.

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